237 lines
6.4 KiB
Markdown
237 lines
6.4 KiB
Markdown
# Cloud Infrastructure Provisioning
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Kubernetes can be installed just about anywhere physical or virtual machines can be run. In this lab we are going to focus on Google Cloud Platform (IaaS).
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This lab will walk you through provisioning the compute instances required for running a H/A Kubernetes cluster. A total of 9 virtual machines will be created.
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After completing this guide you should have the following compute instances:
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```
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gcloud compute instances list
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```
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````
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NAME ZONE MACHINE_TYPE PREEMPTIBLE INTERNAL_IP EXTERNAL_IP STATUS
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controller0 us-central1-f n1-standard-1 10.240.0.20 XXX.XXX.XXX.XXX RUNNING
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controller1 us-central1-f n1-standard-1 10.240.0.21 XXX.XXX.XXX.XXX RUNNING
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controller2 us-central1-f n1-standard-1 10.240.0.22 XXX.XXX.XXX.XXX RUNNING
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etcd0 us-central1-f n1-standard-1 10.240.0.10 XXX.XXX.XXX.XXX RUNNING
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etcd1 us-central1-f n1-standard-1 10.240.0.11 XXX.XXX.XXX.XXX RUNNING
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etcd2 us-central1-f n1-standard-1 10.240.0.12 XXX.XXX.XXX.XXX RUNNING
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worker0 us-central1-f n1-standard-1 10.240.0.30 XXX.XXX.XXX.XXX RUNNING
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worker1 us-central1-f n1-standard-1 10.240.0.31 XXX.XXX.XXX.XXX RUNNING
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worker2 us-central1-f n1-standard-1 10.240.0.32 XXX.XXX.XXX.XXX RUNNING
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````
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> All machines will be provisioned with fixed private IP addresses to simplify the bootstrap process.
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To make our Kubernetes control plane remotely accessible, a public IP address will be provisioned and assigned to a Load Balancer that will sit in front of the 3 Kubernetes controllers.
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## Create a Custom Network
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```
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gcloud compute networks create kubernetes --mode custom
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```
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```
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NAME MODE IPV4_RANGE GATEWAY_IPV4
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kubernetes custom
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```
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```
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gcloud compute networks subnets create kubernetes \
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--network kubernetes \
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--region us-central1 \
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--range 10.240.0.0/24
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```
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```
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NAME REGION NETWORK RANGE
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kubernetes us-central1 kubernetes 10.240.0.0/24
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```
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### Firewall Rules
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```
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gcloud compute firewall-rules create kubernetes-allow-icmp \
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--network kubernetes \
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--source-ranges 0.0.0.0/0 \
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--allow icmp
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```
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```
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gcloud compute firewall-rules create kubernetes-allow-internal \
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--network kubernetes \
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--source-ranges 10.240.0.0/24 \
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--allow tcp:0-65535,udp:0-65535,icmp
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```
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```
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gcloud compute firewall-rules create kubernetes-allow-rdp \
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--network kubernetes \
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--source-ranges 0.0.0.0/0 \
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--allow tcp:3389
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```
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```
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gcloud compute firewall-rules create kubernetes-allow-ssh \
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--network kubernetes \
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--source-ranges 0.0.0.0/0 \
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--allow tcp:22
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```
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```
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gcloud compute firewall-rules create kubernetes-allow-healthz \
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--network kubernetes \
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--allow tcp:8080 \
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--source-ranges 130.211.0.0/22
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```
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```
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gcloud compute firewall-rules create kubernetes-allow-api-server \
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--network kubernetes \
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--source-ranges 0.0.0.0/0 \
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--allow tcp:6443
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```
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```
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gcloud compute firewall-rules list --filter "network=kubernetes"
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```
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```
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NAME NETWORK SRC_RANGES RULES SRC_TAGS TARGET_TAGS
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kubernetes-allow-api-server kubernetes 0.0.0.0/0 tcp:6443
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kubernetes-allow-healthz kubernetes 130.211.0.0/22 tcp:8080
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kubernetes-allow-icmp kubernetes 0.0.0.0/0 icmp
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kubernetes-allow-internal kubernetes 10.240.0.0/24 tcp:0-65535,udp:0-65535,icmp
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kubernetes-allow-rdp kubernetes 0.0.0.0/0 tcp:3389
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kubernetes-allow-ssh kubernetes 0.0.0.0/0 tcp:22
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```
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## Create the Kubernetes Public IP Address
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Create a public IP address that will be used by remote clients to connect to the Kubernetes control plane:
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```
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gcloud compute addresses create kubernetes
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```
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```
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gcloud compute addresses list kubernetes
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```
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```
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NAME REGION ADDRESS STATUS
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kubernetes us-central1 XXX.XXX.XXX.XXX RESERVED
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```
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## Provision Virtual Machines
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All the VMs in this lab will be provisioned using Ubuntu 16.04 mainly because it runs a newish Linux Kernel that has good support for Docker.
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### etcd
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```
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gcloud compute instances create etcd0 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.10
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```
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```
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gcloud compute instances create etcd1 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.11
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```
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```
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gcloud compute instances create etcd2 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.12
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```
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### Kubernetes Controllers
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```
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gcloud compute instances create controller0 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.20
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```
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```
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gcloud compute instances create controller1 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.21
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```
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```
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gcloud compute instances create controller2 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.22
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```
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### Kubernetes Workers
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```
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gcloud compute instances create worker0 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.30
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```
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```
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gcloud compute instances create worker1 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.31
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```
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```
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gcloud compute instances create worker2 \
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--boot-disk-size 200GB \
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--can-ip-forward \
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--image-project ubuntu-os-cloud \
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--image ubuntu-1604-xenial-v20160627 \
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--machine-type n1-standard-1 \
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--subnet kubernetes \
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--private-network-ip 10.240.0.32
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```
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